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M. M. WHITE.

RAILROAD SWITCH. No. 266.665..- Pavtented 0015.131, 1882.

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UNTTEE STATES PATENT EEICE.

MOORES M. VHITE, OF NEW YORK, N. Y.

RAILROAD-SWITCH.

SPECIFICATION forming part of Letters Patent No. 266,665, dated October 31, 1882,

Application tiled June 1Q, 1832.

To all whom fit may concern Be it known that I, MooREs M. WHITE, a citizen ofthe United States of America, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Railroad- Switches, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in vswitches for horse-railroads ot' that type in which the weight of the animal is made to move the tongue ofthe switch; and the object of my invention is to provide an improvement upon the switch for which Letters Patent were granted to HenryDouglass on the 13th day of March, 1879, No. 213,325. I attain this object by the mechanism illustrated in the accompanying drawings, in which- Figure l is a plan view, showing the bala'nced moving platform onto which the animal is driven for the purpose of changing the position of the tongue ot' the switch, the frog in position on the fixed portion of the platform, and the movable tongue. Fig. 2 is a sectional elevation on line .t x of Fig. 1; and Fig. 3 is an enlarged plan view with the top plate and platform removed, showing a portion ofthe mechanism for shifting the tongue of the switch, and especiallyv the form ofthe aperture through which the arm moves which shifts said tongue.

Similarletters refer to similar parts throughout the several views.

In practice the device for which a patent was granted to Douglass, above referred to, has been found to be defective, in that there is in said device no provision for preventing a rolling or turning movement of the tongue, except the pin or pivots on which it oscillates, the consequence being that as the wheels of the car enter upon it the weight is made to rest upon one side thereof, which has the effect to cause it to be rapidly worn away around said pivoted point, and to such an extent as to allow' the tongue to roll or turn partially upon its edge, and thus endanger its proper operation, and at times to give a wrong direction to the car. My object being to preside a remedy for the abovenamed difficulty, I provide a cast-iron frame, A, ofthe form required, and upon its upper surface place two vertically-moving balanced platforms, B and C, said upper surface being pro- (No model.)

vided with depressions A for the reception of the frogs D and D, they being placed at such adistance from each other as to allow the wheels ofthe cars to pass over them and be directed upon therails ofthe tracks, which are connected to them at their ends. That portion of the upper surface of the frame A which is between the frog D and platform B is fixed to said frame, and has no motion imparted to it. The balanced platforms above alluded to are supported upon rock-shafts E E, which have their bearings in boxes or projections formed upon the interior of the frame, as shown at E2 in Fig. 3. From the surface of the rock-shafts lugs E3 E3 project, and upon which rest brackets or bearings EAL E, which project downward from the verticallymoving platforms B and C. From the upper surfaces of the rock-shafts lugs F project, to which there is attached a connecting-rod, F, which unites said shafts in such a manner that as one ofthe balanced platforms resting upon said shafts is forced downward by the weight of the animal the opposite one will be carried upward.

rlhe above-described parts are substantially the same as the parts for the same purpose described in the patent of Douglass, and constitute no part of my invention. 1n switches of this type it is necessary that there should bc formed in the lower surface ot' the depression A', in which the frog which carries the movable switch-tongue rests, an aperture for the passage of an arm, G, which passes through a slot formed in the connecting-rod F, by which the required movement is imparted to the tongue. The fact that the tongue of the switch moves over this aperture renders it possible for dirt to enter said aperture, and hence it becomes necessary that provision should be made for its ready passage through the same without affecting the operations of the switch. For the purpose of eifecting this result, and for the further purpose of preventing the rocking orturning ofthe switch-tongue as the cars pass over it, l provide an opening of the form shown in Fig. 3 at H, the elongated outer portions of which constitute a free passage for any dirt that may pass down by the sides of t'hc tongue as it is moved to and fro, while the contracted central walls ot' the aperture form abutments or supports against which the arm G rests when in position to guide the car upon either track IOO as herein desclibed, whereby it is made to aF- ford a ready passage fol` dirt and to support said moving arm, and thus prevent the rolling or turning action upon the movable tongue of the switch, substantially as hereinbefore described.

In testimony Whereofl afx my signature in presence of-two Witnesses.

MOORES M. VHITE. Witnesses:

A. P. SMiTH, SETI-1 WILKS. 

